Learning Forum

[Mohamad Yassine]

I am trying to model a 2D tubes bundles (see figure) by modelling a periodic portion of the geometry. I added the symmetry/periodic boundary conditions and I define the pressure gradient (1e-5 Pa) to drive the flow. The resulting velocity contours I am getting are zero, but when i switch off "node" values i get banded velocity contours (smooth contours option is greyed out). Am i doing something wrong?

[Rob]

How does the convergence look?  1e-5 Pa is tiny, so the flow velocity may be near enough zero.